From an article in Search Engine Land Google Analytics Adds New Features:
Following October’s release of Google Analytics new features, Google has just released another set of very cool new features. Among them is “Annotations,” a tremendously useful new feature both to analysts as well as executives, who are usually not up to date on granular details about website activity.
The annotations feature basically allows users to make comments on graphs regarding events that happened on specific days.
I can think of several ways in which this would be handy. I could keep track of when I started an article marketing campaign focused around a certain topic, and see how it affected traffic. I could put in a note about, really, any of the different items I’m using to increase traffic, and have a better idea on how they affected my search results, even IF they affected them or not.
